CN1070274C

CN1070274C - Vacuum valve control device and vacum valve

Info

Publication number: CN1070274C
Application number: CN94108850A
Authority: CN
Inventors: 山部泰男; 大塚哲史
Original assignee: Sekisui Chemical Co Ltd
Current assignee: Sekisui Chemical Co Ltd
Priority date: 1993-06-07
Filing date: 1994-06-07
Publication date: 2001-08-29
Anticipated expiration: 2014-06-07
Also published as: DE69423134D1; ATE190143T1; US5615701A; EP0628900B1; AU2000897A; KR950001161A; KR100284355B1; US5918853A; CA2125206C; SG50580A1; EP0628900A2; CA2125206A1; AU6455394A; AU679736B2; AU690487B2; CN1103176A; EP0628900A3

Abstract

A vacuum valve (15) includes: a pressure control chamber (83) for giving a vacuum force to a valve body (71) capable of connecting a valve operating chamber (25) with a vacuum passage; a detecting valve (68) capable of introducing a vacuum force into the pressure control chamber (83); a plunger (65) directly driven by a liquid detecting diaphragm (60), wherein the plunger (65) drives the detecting valve (68); and an opening time adjusting valve which is opened so that the vacuum introduced into the pressure control chamber (83) can be released, wherein the opening time is automatically controlled by the vacuum in the vacuum discharge pipe (14). Furthermore, when the inside of a liquid level detecting pipe section (56) is quickly decompressed, pressure in a pressure adjusting chamber (102) is quickly released through a gap formed between a damping diaphragm (59) and supporting section (112).

Description

Vacuum valve control device and vacuum valve

The present invention relates to a kind of vacuum valve control device that is used for vacuum valve, this vacuum valve is installed on vacuum type sewage collection system or the vacuum type Chemicals conveying equipment, and this valve body comes work by the pressure reduction between vacuum and the air.Specifically, the present invention relates to a kind of vacuum valve control device that is used to control the vacuum of opening and closing valve body.

Usually, the sewage of discharging from each family is by flowing to sewage treatment works naturally.But in spontaneous current dynamic formula sewage collection system, because geology and surface state lay sewage conduct and be restricted, and waste pipe have blocked possibility.Therefore, noticed the vacuum type sewage collection system recently, in this system, the sewage that every family discharges is seen off forcibly by the effect of vacuum.

This vacuum or sewage collection system comprise: a vacuum valve device, and when sewage was mobile by the mobile effect of nature, the sewage of discharging from every family was stored in this device; With a vacuum station, by this vacuum station with sewage from vacuum valve device, collect through vacuum tube.

For example U.S. Pat 5,069, and 243 disclose a kind of vacuum valve device.It comprises: a pumping tube, and its end is inserted in the sewage of cesspool; One vacuum valve, its tube-shaped joint part is connected with the other end of pumping tube; With the vacuum discharge tube that is connected with joint part, the vacuum discharge tube is connected with vacuum pump in the vacuum station through vacuum tube.In this vacuum valve, when the valve body in being located at the tube-shaped joint part was worked, tube-shaped joint can be opened and closed.Make vacuum tube always be in vacuum state by vacuum pump through vacuum tube.When sewage reached prearranging quatity in the cesspool, under the vacuum and the differential pressure action between the air in vacuum tube, the valve body in the vacuum valve was opened, and causes tube-shaped joint to be opened.Therefore, the vacuum discharge tube that is under the vacuum state is communicated with pumping tube, causes the sewage in the cesspool to be drawn onto in the vacuum discharge tube under vacuum action, and delivers to vacuum station through vacuum tube.

Valve body in the vacuum valve joint is closed joint usually.When the valve active chamber was placed vacuum state, valve body was pulled, and joint is opened.Vacuum state in the valve active chamber is controlled by vacuum valve control device.

Described vacuum valve control device is connected with the level detection pipe, in the sewage in the detecting tube lower end insertion cesspool.When the sewage level height changed, the pressure in the level detection pipe also changed.Like this, the liquid in the vacuum valve control device detects barrier film and produces resiliently deformable.Because the distortion of level detection barrier film is used in the detection valve starting of vacuum being introduced vacuum valve control device.Therefore, make on the changing valve of vacuum action in vacuum control valve.According to above-mentioned situation, changing valve can commutate, and causes the vacuum discharge tube to be connected with the valve active chamber of vacuum valve.Therefore, this valve active chamber is in vacuum state.When the valve active chamber is in vacuum state, spurs valve body, and joint is opened.

The vacuum discharge tube that consequently is in vacuum state is connected with suction pipe, thereby makes suction pipe inside also be in vacuum state.Therefore, the sewage in the cesspool promptly is drawn onto in pumping tube and the vacuum discharge tube.Afterwards with sewage in vacuum tube is sent into sewage collecting pool in the vacuum station.

When the sewage in the cesspool aspirated for a moment, the level detection barrier film of vacuum valve control device progressively turned back to reset condition.Therefore, detect valve work and stop, the passage between vacuum valve control device inside and the vacuum discharge tube is cut off.Simultaneously, air enters vacuum valve control device.Changing valve commutation afterwards causes air to enter into the active chamber of vacuum valve.

According to above-mentioned U.S. Pat 5,069,243, be provided with a damping mechanism, can prevent under the situation of the sewage of level detection barrier film in cesspool by the discharge of vacuum discharge tube resiliently deformable to take place by this mechanism, and the elastic deformation energy of level detection barrier film is eliminated.The damping barrier film comprises: a pressure regulating cavity that is located between level detection pipe and the level detection barrier film; And damping barrier film that is located between pressure regulating cavity and the level detection barrier film.

Be provided with a micropore on the damping barrier film, when the pressure in the level detection pipe raise gradually like this, the damping barrier film did not deform.Therefore, under sewage was stored in situation in the cesspool, along with the pressure in the level detection pipe raises, resiliently deformable can not take place in the damping barrier film.On the other hand, sewage in cesspool has been discharged from back level detection barrier film and has produced resiliently deformable, and under the situation that the resiliently deformable of level detection barrier film has been eliminated, the damping barrier film produces resiliently deformable, thereby the passage between pressure regulating cavity and the level detection barrier film is cut off.Thereby, can prevent that the level detection barrier film from producing resiliently deformable.Therefore, start detection valve, and vacuum valve once more can not be opened.

In above-mentioned vacuum sewage collecting equipment, discharge after the sewage sucking-off in the cesspool at once.Therefore, the cesspool liquid level descends suddenly.Thereby the liquid level in the level detection pipe also descends, and causes its pressure also to descend suddenly.But as mentioned above, owing to be provided with a damping barrier film between level detection pipe and pressure regulating cavity, when the pressure in the liquid detecting tube descended, the pressure in the pressure regulating cavity only depended on micropore to discharge.And, need spended time to go to eliminate the resiliently deformable of level detection barrier film.Therefore, when the sewage in cesspool is discharged from, suck a large amount of air, and degree of vacuum reduces.

In addition, in vacuum valve control device, the vacuum power that enters pressure regulating cavity is discharged in the air by needle-valve.

But, in general vacuum type sewage collection system shown in Figure 5, from from the far place of vacuum station 2 with sewage collecting to sewage collecting pool 1, the zigzag fashion stroke 4 of vacuum line 3 descends degree of vacuum.Under the situation that the opening time controlling mechanism with needle-valve is housed in the conventional vacuum valve control, employing will be placed on the longer method of opening time setting of the vacuum valve in place far away, regulate described needle-valve near respectively with place far away, the air/liquid ratio can maintain a scope (open in the patent gazette Hei-2-292427 of Japanese unexamined) in the pipeline like this.Under the situation that vacuum valve is opened simultaneously, the degree of vacuum in the vacuum discharge tube reduces.When this situation often took place, a large amount of air can not be sent in the vacuum line, and causing at stroke part water plug increases, and defect appears in whole system.

In addition, between the outer circumferential face in the cylinder of vacuum valve and the inner peripheral surface of cylinder, be provided with a rolling diaphragm, this rolling diaphragm seals the valve active chamber in the cylinder.This rolling diaphragm is made by elastic caoutchouc, and crooked between piston outer circumferential face and cylinder inner peripheral surface, and rolling diaphragm closely contacts with the cylinder inner peripheral surface with the piston outer circumferential face like this.Under the situation of the vacuum action lower slider of piston in cylinder internal valve active chamber, rolling diaphragm produces distortion, and its curved section moves on glide direction at piston.As described above, when the volume of valve active chamber was unaltered, forward moved under the effect of time spent piston at rolling diaphragm when the vacuum generation is done.

Usually, contact not closely with the cylinder inner peripheral surface near the part of rolling diaphragm curved section, but this part contacts with rolling diaphragm, and rolling diaphragm closely contacts with the piston outer circumferential face.As mentioned above, when the part of rolling diaphragm contacted with another part under pressure, under the situation of contact segment according to the slip campaign of piston, this contact segment might be worn.When rolling diaphragm was worn, its sealing might be destroyed.When its sealing is destroyed, the sealing of valve active chamber can not be kept, and when the valve active chamber was in vacuum state, piston can not move.

Therefore,, used a kind of method in practice, adopted this method, coated lubricant oil on the surface of rolling diaphragm, as silicone grease or silicone oil in order to eliminate the damage of rolling diaphragm.But the lubricant oil that is coated with penetrates in the rolling diaphragm of being made by elastic material, causes lubricant oil generation effect for a long time.Therefore, rolling diaphragm just must be changed in a short time.

Realize that the present invention is to address the above problem.An object of the present invention is to provide a kind of vacuum valve control device, adopt this vacuum valve control device, after the sewage in cesspool was discharged under the effect of vacuum, this vacuum valve can promptly cut out.

Another object of the present invention is to make vacuum valve open one period corresponding opening time according to the degree of vacuum in the vacuum discharge pipe, like this, air/liquid ratio in pipeline can remain on predetermined scope, and vacuum type liquid collection/feedway can stably be worked.

A further object of the present invention provides a kind of vacuum valve, in this vacuum valve, is used for stably using long time to the rolling dividing plate of valve active chamber sealing.

In order to finish above-mentioned purpose, the invention provides a kind of vacuum valve control device, this device is contained in the vacuum valve, this vacuum valve utilizes vacuum to cut out and open tube-shaped joint, this joint is used for connecting the vacuum discharge tube that is in vacuum state and is used for aspirating the pumping tube of pond liquid, described vacuum valve control device is controlled the opening and closing of described vacuum valve, and described vacuum valve control device comprises: level detection pipe, its internal pressure are the liftings with the lifting of liquid level in the pond; The pressure regulating cavity that is communicated with described level detection pipe; A level detection barrier film, its pressure in pressure valve adjusting chamber produce resiliently deformable when acting on the described barrier film by intercommunicating pore; One changing valve, it commutates under the effect of vacuum, thereby makes vacuum or air can send in the described vacuum valve respectively; One detects valve, and it is used for control provides vacuum and stop to provide vacuum to changing valve; A piston that is used to make described detection valve commutation, this detection valve are that the resiliently deformable by described level detection barrier film drives; An and damping barrier film that is placed between described liquid detecting tube and the described pressure regulating cavity, has a micropore at least on the described damping barrier film, like this, when the pressure in described level detection pipe raises gradually, described damping barrier film can not produce resiliently deformable, make described damping barrier film produce resiliently deformable because the pressure in the pressure regulating cavity reduces, cause the intercommunicating pore between described pressure regulating cavity and described level detection barrier film to be closed.When the pressure in the pressure regulating cavity raise suddenly, described damping barrier film can enter the periphery of pressure from it the level detection pipe.

The invention provides a kind of vacuum valve, it is used for connected part and a vacuum discharge tube that is communicated with vacuum source between opening and closing pumping tube and the pond, and vacuum valve comprises: one is used for the valve body of opening and closing connected part; One is used to place the valve active chamber of the piston that is connected with valve body; One closes the power supplier, and it will the power of closing passes to the valve body in the valve active chamber; With one be used for opening force by vacuum action is passed to the controller of valve body at the valve active chamber, wherein this controller comprises a changing valve, it can commutate between vacuum passage in the valve active chamber and air passageways; One level detection barrier film, it just comes work according to liquid level in the pond; One passes to the pressure control cavity of changing valve with vacuum power, so that vacuum passage can be communicated with the valve active chamber; A detection valve that is contained in the pressure control cavity, this valve can be incorporated into vacuum power in the pressure control cavity; A piston that directly drives by the level detection barrier film, this piston is inserted in the pressure control cavity, detects valve to drive; With an opening time modulating valve that is opened, so that the vacuum power that will import in the pressure control cavity discharges, wherein, the opening time is by the vacuum automatic control in the vacuum discharge tube.

Therefore, according to the present invention, rolling diaphragm should have elasticity, so that can be out of shape by the motion of piston, contains lubricant oil in the rolling diaphragm, so that lubricant oil oozes out from the rolling diaphragm surface.And rolling diaphragm one end is a major diameter part, it can contact with the valve active chamber internal surface sealing under being in the preceding free state of assembling, the other end is a small diameter portion, and it can contact with the outer surface of piston sealing, and the middle part is the part of taper between major diameter part and small diameter portion.

In vacuum valve control device of the present invention, when the pressure in the level detection pipe raise along with the rising of the liquid level in the pond, the pressure in the pressure regulating cavity increased, and resiliently deformable does not take place the damping barrier film, causes the level detection barrier film to produce resiliently deformable.Because the resiliently deformable of level detection barrier film, piston is driven, and detects valve work, and changing valve enters vacuum state.When switching valve enters vacuum state, change-over valve operation, vacuum valve inside enters vacuum state, causes vacuum valve to be opened.Therefore pumping tube in the pond and the connected part between the vacuum discharge tube are opened, and pumping tube is in vacuum state, and the sewage in the pond is discharged from through pumping tube and vacuum discharge tube under the effect of vacuum like this.

When the liquid level in the pond descended, the pressure in the level detection pipe reduced, and the pressure in the pressure regulating cavity promptly discharges from the edge of damping barrier film.Therefore, the resiliently deformable of level detection barrier film also rapidly disappears.For above-mentioned reasons, make by the detection valve work of piston guide to stop, change-over valve operation, air is admitted in the vacuum valve, and vacuum valve cuts out under the effect of sending into air afterwards.

When the level detection barrier film produced resiliently deformable, under the situation that its resiliently deformable disappears, pressure regulating cavity was in decompression state, and damping barrier film generation resiliently deformable causes the part that is communicated with the level detection barrier film to be closed.Therefore, can prevent level detection barrier film generation resiliently deformable.The detection valve possibility of task does not more just have.

In addition, when the Valve travel of opening time modulating valve by from the vacuum automatic control of vacuum discharge tube the time, (a) degree of vacuum is higher, and the Valve travel of opening time modulating valve is just bigger, and the vacuum valve shut-in time is short, (b) degree of vacuum is lower, the Valve travel of opening time modulating valve is just little, and the vacuum valve opening time is long, therefore, air/liquid ratio in the pipeline can maintain prespecified range, and this vacuum type liquid collection/conveying equipment can stable operation.

And in vacuum valve of the present invention, the rolling diaphragm that the cylinder internal valve active chamber that is used for being held vacuum state separates contains lubricant oil, so lubricant oil constantly oozes out from the rolling diaphragm surface.When valve is mobile in active chamber, be worn near the part barrier film that is bent part, in this case, the lubricant oil that oozes out from the rolling diaphragm surface has been prevented the wearing and tearing of rolling diaphragm.In addition, under the free state before the assembling, an end of rolling diaphragm is made the major diameter part, and the other end is made small diameter portion, and intermediate portion is made tapering part.When using rolling diaphragm, the partially folded surface of rolling diaphragm bent intermediate does not contact each other, thereby can be owing to wearing and tearing cause damage.

Fig. 1 is the sectional view of vacuum type sewage collecting equipment, expresses the use condition of the vacuum valve that has vacuum valve control device of the present invention among this figure.

Fig. 2 A and 2B are the longitdinal cross-section diagram of described vacuum valve;

Fig. 3 is the longitdinal cross-section diagram that is contained in a kind of example of the vacuum valve control device of the present invention on the vacuum valve;

The amplification sectional view of the vacuum valve control device major component of Fig. 4;

Fig. 5 is a kind of vacuum type sewage collection system figure;

Fig. 6 A is the sectional view of controller part;

Fig. 6 B is the amplification sectional view of valve portion among Fig. 6 A;

Fig. 7 A is another cross section of the third embodiment of controller part;

Fig. 7 B and 7C are a kind of view of duckbill valve;

Fig. 8 A is that another section of the third embodiment of controller part schemed;

Fig. 8 B and 8C are the view of the taper ports valve of flexibility;

Fig. 9 is the view of the typical opening time modulating valve of the present invention;

Figure 10 A and 10B are the sectional view under the state before and after rolling diaphragm is installed.

Consult accompanying drawing below, will describe first kind of embodiment of the present invention.

Fig. 1 is the cross-sectional of vacuum type sewage collecting equipment, has used the vacuum valve that has vacuum valve control device of the present invention in this equipment.This vacuum type sewage collecting equipment 10 is used for collecting the sewage that each family flows out naturally.When the cesspool 11 in the vacuum type sewage collecting equipment 10 installs to a predetermined sewage quantity, just, be provided with vacuum pump at sewage plant with in the sewage collecting pool of described sewage transport in the sewage plant.The sewage that to deliver in the sewage collecting pool with pump is delivered to sewage treatment works then.

Sewage intake channel 12 is communicated with cesspool 11 in the vacuum type sewage collecting equipment 10, and sewage flows into this pipe 12 naturally from every family.In cesspool 11, suction pipe 13 vertically is provided with, and the sewage that is stored in the cesspool 11 is sucked out from this pipe 13.An end of tube-shaped joint 28 that has the valve body 24 of vacuum valve 15 flatly is connected the upper end of suction pipe 13.Vacuum discharge tube 14 flatly is connected to the other end of joint 28.Valve body 24 by vacuum valve 15 opens and closes joint 28, and valve body 24 is contained in the inside of joint 28.

Vacuum discharge tube 14 is communicated with vacuum station by vacuum tube.Make vacuum discharge tube 14 and vacuum tube inside by the vacuum pump that is located on the vacuum station, remain under the vacuum state.Therefore, when joint 28 was opened, vacuum discharge tube 14 was communicated with suction pipe 13.Thereby by the vacuum action in joint 28 and the vacuum discharge tube 14, the sewage in the cesspool 11 is sucked in the suction pipe 13, and promptly deliver in the sewage collecting pool in the vacuum station.

One level detection pipe 37 vertically is placed in the cesspool 11, and its lower end is immersed in the sewage in the cesspool 11.This detecting tube 37 is by the internal communication of the vacuum valve control device 27 in flexible pipe 38 and the vacuum valve 15.Therefore, the caused variation in pressure of lifting of liquid level can be sent to vacuum valve control device 27 in the cesspool 11.The degree of vacuum in the valve active chamber 25 in the vacuum valve 15 is controlled in the variation of sewage level in the cesspool 11 that vacuum valve control device 27 detects according to level detection pipe 37.

The vacuum discharge tube 14 inner flexible pipes 41 that pass through are communicated with vacuum valve control device 27.Vacuum state in the vacuum discharge tube 14 is sent in the vacuum valve control device 27 like this.In addition, atmospheric communicating pipe 43 is communicated with vacuum valve control device 27 by flexible pipe 44.Atmospheric communicating pipe 43 upper ends communicate with ground atmosphere.The atmosphere of introducing from atmospheric communicating pipe 43 is introduced in the vacuum valve control device 27 by flexible pipe 44.Described atmospheric communicating pipe 43 also is communicated with valve active chamber 25 by flexible pipe 46.

Fig. 2 A and 2B are the longitdinal cross-section diagram of vacuum valve 15.This valve 15 comprises: the first cylindrical shape cylinder 21, and it and joint 28 are one, are provided with a valve body 24 in joint 28, this cylindrical shape cylinder 21 and joint 28 internal communication; With the second cylindrical shape cylinder 22, it is connected with the first cylindrical shape cylinder, 21 tops by hoop clip 23.In this case, the first cylindrical shape cylinder 21 forms 45 ° of angles with respect to the joint 28 of horizontal arrangement.The first cylindrical shape cylinder, 21 inside are separated into two-part up and down by dividing plate 21a, and valve active chamber 25 is arranged on the upside of described dividing plate 21a.

Valve rod 29 passes the center of dividing plate 21a, and the valve body 24 that opens and closes joint 28 is fixed to the lower end of valve rod 29.Valve rod 29 is arranged in the valve active chamber 25, and is fixed on the bottom surface of circle tube piston 30, and the upper surface of described piston 30 is that we opens.Piston 30 is slidingly arranged in the valve active chamber 25, and is being pressed by the spring 26 that is arranged in the valve active chamber 25, and like this, valve body 24 can be closed joint 28.

Elastic rolling barrier film 31 is arranged between first cylinder 21 and second cylinder 22.The periphery of rolling diaphragm 31 is between first cylinder 21 and second cylinder 22, and this rolling diaphragm 31 is fixed up.Part near rolling diaphragm 31 outer peripherys is close to second cylinder, 22 inner peripheral surfaces.Intermediate portion near the inner end of the rolling diaphragm of being close to second cylinder, 22 inner peripheral surfaces 31 is curved 360 ° in addition.Part near the curved section inboard is close to the side of piston 30, and the core of curved section inboard and piston 30 bottom surfaces are close to.Valve rod 29 passes the center of rolling diaphragm 31, and described barrier film 31 encases piston 30 bottom surfaces.

Vacuum valve control device 27 of the present invention is arranged on the upper end of second cylinder 22, and it is connected with second cylinder, 22 upper ends by hoop clip 36.These control gear 27 operations are as follows.Sewage quantity in cesspool 11 increases, and when the pressure in the level detection pipe 37 rose, valve active chamber 25 was in vacuum state, and piston 30 is pushed, and the elastic force of valve body 24 antagonistic springs 26 is drawn back, thereby valve body 24 is opened joint 28.When valve body 24 was drawn back, joint 28 was opened, and vacuum discharge tube 14 and suction pipe 13 are in the state of connection.Therefore, by the vacuum action in the vacuum discharge tube 14, the sewage in the cesspool 11 is transferred away through vacuum discharge tube 14.

Fig. 3 is the longitdinal cross-section diagram of vacuum valve control device 27.This vacuum valve control device 27 comprises a shell of being made up of five housings, and they are first housing, 51 to the 5th housings 55.First housing, 51 to the 5th housings 55 are from setting gradually, and connect in aggregates by bolt.Usually, the 4th housing 54 is fixedlyed connected with the upper end of second cylinder 22 of vacuum valve 15 by hoop clip 36 (as Fig. 2 A with shown in the 2B).

Liquid detecting tube joint 56 is installed in the upper surface of uppermost first housing 51, and the flexible pipe 38 that is connected with level detection pipe 37 is fixed on this pipe joint 56.Atmospheric pressure connecting tube joint 58 and the 3rd housing 53 are one, and the flexible pipe 44 that is connected with atmospheric communicating pipe 43 is received on the atmospheric pressure connecting tube joint 58.Therefore, the pressure in the atmospheric pressure connecting tube joint 58 is identical with atmospheric pressure.Vacuum connection tube joint 57 and the 3rd housing 53 are one, and are connected with vacuum connection tube joint 57 with the flexible pipe 41 of vacuum discharge tube 14 connections.Therefore, vacuum connection tube joint 57 inside and the vacuum discharge tube 14 the same vacuum states that are in.In addition, connecting pipe joint 93 is an one with nethermost the 5th housing 55, and connecting pipe joint 93 protrudes downwards from the 5th housing 55, and it is communicated with valve active chamber 25 in second cylinder 22.

Have on the lower surface of uppermost first housing 51 one downward we open on booster cavity 81.The worn-out notch portion of last booster cavity 81 is covered tightly by the level detection barrier film 60 between first housing 51 and second housing 52.Form upwards our following relief chamber 82 of opening on second housing, 52 tops.Cover down the opening of relief chamber 82 with level detection barrier film 60.Therefore, level detection barrier film 60 will be gone up booster cavity 81 and following relief chamber 82 separates.

Following relief chamber 82 usefulness bottom surface section 52a in second housing 52 cover, and vertically form a through hole 94 on bottom surface section 52a.Through hole 94 is communicated with connecting passage 53c, and this passage 53c is communicated with atmospheric pressure connecting tube the end of a thread 58 in the 3rd housing 53, and passage 53c and atmospheric pressure connecting tube joint 58 constitute a right angle.Therefore, following relief chamber 82 is communicated with atmospheric pressure connecting tube joint 58.

The 3rd housing 53 below second housing 52 is provided with a pressure control cavity 83, and we opens towards last central part in this chamber 83.Below this pressure control cavity 83, have one by dividing plate 53a separate on relief chamber 84.Should go up relief chamber 84 downward we opening, and its opening drives barrier film 70 and seals with being arranged on valve between the 3rd housing 53 and the 4th housing 54.One our following relief chamber 85 of opening is upwards arranged at the center of the 4th housing 54 upper surfaces.The opening of this time relief chamber 85 drives barrier film 70 sealings with valve.Therefore, valve drives barrier film 70 and will go up booster cavity 84 and separate airtightly with following relief chamber 85.Suction chamber 86 separates with following relief chamber 85 by dividing plate 54a, and chamber 86 is in the central lower of the 4th housing 54.Chamber 86 downward we open, and cover its opening with nethermost the 5th housing 55.This suction chamber 86 is communicated with connecting pipe joint 93, and pipe joint 93 is communicated with valve active chamber 25 in the vacuum valve 15.

One our pressure regulating cavity 102 of opening is upwards arranged on the upper end face of first housing 51.Fig. 4 is the amplification sectional view of this pressure regulating cavity 102.There is a circular groove 111 in worn-out mouthful edge on pressure regulating cavity 102 upper surfaces, has formed a suitable gap like this between the interior annular surface of circular groove 111 and worn-out mouthful.Between the interior ring surface of groove 111 and worn-out mouth an annular brace part 112 that raises up is arranged, adopt such method, described annular brace part 112 encases all worn-out mouthful circumferential surfacies.The excircle part of dish type damping barrier film 59 is placed on the supporting part 112, and by its support.The outer periphery of damping barrier film 59 is arranged on the groove 111, and all simultaneously peripheries are on the groove 111.

The top of pressure regulating cavity 102 is provided with level detection pipe joint 56.At an end of level detection pipe joint 56, be provided with a flange 56a.Adopt flange 56a to cover the method for the worn-out mouth on pressure regulating cavity 102 upper surfaces, flange 56a is installed on first housing 51.In flange 56a, form one around circular groove 111 cut away part 56b, can form a suitable gap thereby cut away between part 56b and the damping barrier film 59.Therefore, damping barrier film 59 with cut away the inboard relative of part 56b, and its outer periphery is unfixing, just it is placed on the supporting part 112 simply.

Flexible pipe 38 (Fig. 2 A is with shown in the 2B) and liquid level inspection side pipe joint 56 is connected, is immersed in liquid level in the sewage of cesspool 11 and examines side pipe 37 and be communicated with flexible pipe 38.

In pressure regulating cavity 102, be provided with one with worn-out mouthful of relative valve seat 101 of liquid inspection side pipe joint 56, valve seat 101 raises up, valve seat 101 can be examined side pipe joint 56 near liquid like this.On valve seat 101, vertically be provided with an intercommunicating pore 103 that is used to connect pressure regulating cavity 102 and last booster cavity 81.The internal diameter of intercommunicating pore 103 is constant.

A through hole 59a that diameter is very little is arranged on damping barrier film 59, and when the pressure in the liquid inspection side pipe joint 56 slowly increased, this barrier film 59 can not be out of shape.Through hole 59a is located at the outside of intercommunicating pore 103 open ends.The diameter of through hole 59a is more much smaller than the diameter of liquid level inspection side pipe joint 56 openings.In addition, the diameter of through hole 59a is also less than the diameter of the intercommunicating pore on the valve seat 101 103.The diameter of through hole 59a preferably adopts such method to determine, promptly the cross section of through hole 59a is less than 1/8 of attachment hole 103 cross sections, and in other words, the diameter of through hole 59a is no more than 0.4[mm], preferably its diameter is about 0.3[mm].Make under the situation that pressure increases in the level detection pipe joint 56 owing to the oilysewage surface in the inflow cesspool 11 progressively raises, because pressure is discharged in the pressure regulating cavity 102 by very little through hole 59a, resiliently deformable can not take place in above-mentioned damping barrier film 59.

On the other hand, when the pressure in the pressure regulating cavity 102 descends, damping barrier film 59 contacts with the upper surface of valve seat 101, and as among Fig. 4 shown in the double dot dash line, the intercommunicating pore 103 on the valve seat 101 is sealed up by the part damping barrier film 59 in the place that does not form through hole 59a like this.

Under the situation that pressure in pressure regulating cavity 102 increases, supporting part 112 and be placed between damping barrier film 59 outer peripherys on the supporting part 112 and form a gap.Therefore, the pressure in the pressure regulating cavity 102 discharges from this gap.

The button 64 that one hand control vacuum valve control device 27 is arranged in first housing, 51 upper surface centers.Described button 64 is provided with inserted link 61, and this inserted link 61 is inserted among the through hole 51b of first housing, 51 upper surface centers formation.Inserted link 61 is bearing among the through hole 51b slidably.Inserted link 61 is pressed to the top by stage clip 63, and with spring caps 62 it is covered.When pressing button, inserted link 61 descends, compression press spring 63, and like this, the center of level detection barrier film 60 is depressed, and resiliently deformable takes place level detection barrier film 60.

Level detection barrier film 60 is between the last booster cavity 81 and the following relief chamber 82 in second housing 52 in first housing 51.And inserted link 65 is arranged on the center of level detection barrier film 60, inserted link 65 vertical insertions in the following relief chamber 82.Inserted link 65 insert divisions are at the center of second housing, the 52 lower surface 52a of following relief chamber 82 bottoms.Then, inserted link 65 enters in the pressure control cavity 83 that forms in the 3rd housing 53.The stage clip 66 that is installed between lower surface 52a and the level detection barrier film 60 cooperates with inserted link 65.By stage clip 66, inserted link 65 and level detection barrier film 60 are upwards pressed.Zero RunddichtringO 67 is installed on the lower surface of bottom surface section 52a, and sealing circle 67 cooperates with inserted link 65 in being inserted into pressure regulating cavity 83.Because the regional seal between inserted link 65 and the pressure control cavity 83 is lived in the effect of zero RunddichtringO.

In the 3rd housing 53, be provided with a passage 57a who is used to connect pressure control cavity 83 and vacuum connection tube joint 57.Pressure control cavity 83 is located in the 3rd housing 53.Also be provided with a vertical passage 53b in the 3rd housing 53, passage 53b upper end is communicated with vacuum connection tube joint 57.In addition, passage 53b is communicated with passage 54b, and passage 54b vertically enters in the 4th housing 54.Passage 54b is communicated with suction channel 87 in being horizontally set on bottom the 5th housing 55.

In pressure control cavity 83, form the open part of a passage 57a who is communicated with vacuum connection tube joint 57 in the 3rd housing 53.This open part comes opening and closing by the detection valve 68 that is arranged in the pressure control cavity 83.In the present embodiment, quick action valve is used for detecting valve 68.Quick action valve comprises: a spring sheet that contacts with inserted link 65 when inserted link 65 moves down; With a tongue piece that is fixed on spring sheet one end, like this, under the pressure of spring sheet, the aperture among this tongue piece energy closing passage 57a.When inserted link 65 moves down when contacting with spring sheet, tongue piece moves up, thereby the aperture among the passage 57a is opened.Because top described, pressure control cavity 83 is communicated with vacuum connection tube joint 57 by passage 57a.

A formed passage is communicated with pressure control cavity 83 with following relief chamber 82 in this second housing 52 above chamber 83 in being provided with the 3rd housing 53 of pressure control cavity 83, and needle-valve 74 is arranged in this passage.The air quantity that this needle-valve 74 is regulated feed pressure control chamber 83 when atmosphere enters down relief chamber 82.Therefore, regulate the time that imports atmosphere in the pressure control cavity 83 by needle-valve 74.

With the dividing plate 53a in the 3rd housing 53, the last relief chamber 84 of pressure control cavity 83 below it separated.At the middle part of dividing plate 53a, form a vertical through hole 88, it is communicated with pressure control cavity 83 with last relief chamber 84.In last relief chamber 84, be provided with a stage clip 69, it drives barrier film 70 to pressing down valve, and barrier film 70 will be gone up the following booster cavity 85 of relief chamber 84 below it and separate.Rod changing valve 71 under vertical the insertion in the booster cavity 85 is fixed on valve and drives barrier film 70 lower surface centers.

Dividing plate 54a will descend booster cavity 85 and suction chamber 86 to separate, and

chamber

85 and 86 is located at respectively in the 4th housing 54, and the dividing plate 54a that changing valve 71 is inserted in the 4th housing 54 goes up in the through hole that forms, and form a gap like this between the through hole on changing valve 71 and the dividing plate 54a.Valve body 71a is fixed to the lower end of the changing valve 71 in the suction chamber 86.Valve seat 72 is located in the through hole of dividing plate 54a, and changing valve 71 passes from this through hole, and valve body 71a cooperates with valve seat 72, so that close described through hole when valve seat 71a moves up.Among the dividing plate 55a of suction chamber 86 bottoms in the 5th housing 55, form a through hole, this hole is communicated with the horizontally disposed suction chamber 87 of suction chamber 86 below it.In this through hole, be provided with a valve seat 73, it cooperates with valve body 71a, so that close this through hole when valve body 71a moves down.

In not descending the 4th housing 54 of booster cavity 85, be provided with a passage 54c, its end is communicated with following booster cavity 85, and the lower end of the vertical passage 92 in the 3rd housing 53 of the other end and the 4th housing 54 tops is communicated with.The upper end of passage 92 is communicated with barometric pressure connecting tube joint 58.Therefore, when atmosphere was imported in the barometric pressure connecting tube joint 58, atmosphere just was imported into down in the booster cavity 85 by passage 92 and 54c.

Vacuum valve 15 work with said structure are as follows.Vacuum connection tube joint 57 in the vacuum valve control device 27 is communicated with vacuum discharge tube 14.Therefore, the inside of vacuum connection tube joint 57 keeps vacuum state.When the sewage quantity in the cesspool 11 progressively increases and be immersed in pressure in the level detection pipe 37 in the sewage when progressively raising under above-mentioned state, the pressure in the level detection pipe joint 56 of the vacuum valve control device 27 that is communicated with level detection pipe 37 by flexible pipe 38 will progressively improve.According to top described, the pressure in the pressure regulating cavity 102 progressively increases, and passes the micro-through-hole 59a on the damping barrier film 59 that the aperture with level detection pipeline head 56 covers.At this moment, resiliently deformable does not take place in damping baffle 59, thereby the intercommunicating pore 103 on the valve seat 101 can not be closed.Therefore, when the pressure in the pressure regulating cavity 102 progressively increases, also can increase gradually with pressure in the last booster cavity 81 that pressure regulating cavity 102 is communicated with by the intercommunicating pore on the valve seat 101 103.

When the pressure in the last booster cavity 81 increased gradually, resiliently deformable little by little took place downwards in level detection barrier film 60.Following relief chamber 82 below the level detection barrier film 60 is communicated with barometric pressure connecting tube joint 58 by through hole 94 and passage 53c.In addition, barometric pressure connecting tube joint 58 is communicated with atmospheric communicating pipe 43 by flexible pipe 44.Therefore, when level detection barrier film 60 was out of shape with elastic type downwards gradually, the air in the following relief chamber 82 just was discharged from.According to top described, the inserted link 65 that is fixed on the level detection barrier film 60 moves down.

When inserted link 65 moved down, the detection valve 68 in the pressure control cavity 83 was promoted by inserted link 65, caused the aperture of the passage 57a that is in the pressure control cavity 83 to be opened.According to top described, because passage 57a has been in vacuum state, so pressure control cavity 83 is under the vacuum state.When pressure control cavity 83 is in vacuum state, below dividing plate 53a on relief chamber 84 also owing to the through hole on the dividing plate 53a 88 is in vacuum state.The following booster cavity 85 by 70 formation of valve driving barrier film below last relief chamber 84 is communicated with barometric pressure connecting tube joint 58 by passage 54c and 92.Thereby following booster cavity 85 leads to atmosphere.Therefore, when the pressure in last relief chamber 84 reduced, valve drove upwards resiliently deformable of barrier film 70, compression press spring 69.

When valve driving barrier film 70 upwards produces resiliently deformable, the changing valve 71 that is fixed on the valve driving barrier film 70 moves up, cause the valve body 71a that is fixed on changing valve 71 lower ends that the valve seat 73 of suction chamber 86 bottoms is opened, simultaneously, valve body 71a closes the valve seat 72 on suction chamber 86 tops.In these cases, suction chamber 86 is communicated with suction channel 87 by lower valve base 73, and suction chamber 86 is owing to the vacuum in the suction chamber 87 is a vacuum state, and suction chamber 87 passes through passage 54b and 53b is communicated with vacuum connection tube joint 57.The pipe joint 93 that is communicated with suction chamber 86 also is in vacuum state.According to top described, the valve active chamber 25 of the vacuum valve 15 that is communicated with pipe joint 93 also is in vacuum state.

When valve active chamber 25 was in vacuum state, the thrust of piston 30 antagonistic springs 26 moved up.Therefore, the valve body 24 that is connected with piston 30 by valve rod 29 moves up.As a result, joint 28 is in open mode, and vacuum discharge tube 14 and pumping tube 13 are interconnected by joint 28 each other, and because the vacuum action in the vacuum discharge tube 14, the sewage in the cesspool 11 is sucked in the pumping tube 13.In the very fast suction suction pipe 13 of sewage in the cesspool 11, suck in the vacuum discharge tube 14 by joint 28 subsequently.Afterwards, the vacuum tube by being in vacuum state with sewage collecting in sewage collecting pool.

When the sewage in the cesspool 11 was discharged for a moment, the pressure in the level detection pipe 37 descended rapidly, and the pressure in the pipe joint 56 also descends rapidly.Because top described, the damping barrier film 59 in the pressure regulating cavity 102 is attracted to level detection pipe joint 56.Because the outer periphery of damping barrier film 59 is not to be fixed on around on the supporting part 112 around the pressure regulating cavity 102, but be placed on and be bearing on the supporting part 112, therefore form a gap between supporting part 112 and damping barrier film 59, the pressure in the pressure regulating cavity 102 can promptly be discharged into level detection pipe joint 56.

Because pressure regulating cavity 102 is communicated with last booster cavity 81 by intercommunicating pore 103, the air of going up so in the booster cavity 81 also promptly enters level detection pipe joint 56 by pressure regulating cavity 102.For above-mentioned reasons, the level detection barrier film 60 that has produced resiliently deformable returns to original state.

Because the following relief chamber 82 below the level detection barrier film 60 leads to atmosphere through long atmospheric communicating pipe 43, air can not flow into relief chamber 82 down through atmospheric communicating pipe 43.But the air in the last booster cavity 81 above the level detection barrier film 59 when the pressure in level detection pipe joint 56 reduces rapidly, flows to level detection pipe joint 56 rapidly by the effect of damping barrier film 60.Therefore, the liquid that has produced resiliently deformable detects barrier film 60 and is returned to its original state quickly and evenly.

Because air flows out around damping barrier film 59, after the resiliently deformable of level detection barrier film 60 rapidly disappeared, the inserted link 65 that is fixed on level detection barrier film 60 lower surfaces moved up.At this moment, inserted link 65 promotes to detect valve 68 and turns back to original state, and the passage 57a that will be communicated with vacuum connection tube joint 57 closes.For above-mentioned reasons, pressure control cavity 83 and the connected state that is between the vacuum connection tube joint 57 of vacuum state are cut off.

At this moment, pressure control cavity 83 is in vacuum state, yet, when the air that flows into relief chambers 82 down from atmosphere connecting tube joint 58 through passage 53c and through hole 94 through needle-valve 74 gradually during feed pressure control chamber 83, through after a bit of time, this vacuum state has just disappeared.

When the vacuum state of pressure control cavity 83 disappears, the vacuum state of the last relief chamber 84 that via through holes 88 is communicated with pressure control cavity 83 has also disappeared, valve drives barrier film 70 and is pressed downward under the effect of stage clip 69, and like this, valve drives the resiliently deformable disappearance that barrier film 70 makes progress.For above-mentioned reasons, the changing valve 71 that is fixed on the valve driving barrier film 70 moves down, and the valve body 71a that is fixed on changing valve 71 lower ends opens the valve seat 72 of upside, simultaneously the valve seat 73 of downside is closed.As a result, the pipe joint 93 that is communicated with the valve active chamber 25 of vacuum valve 15 is communicated with atmosphere connecting tube the end of a thread 58 through suction chamber 86, following relief chamber 85 and passage 54a and 92 above the suction chamber.Therefore, the atmosphere in the atmosphere connecting tube joint 58 enters connecting pipe joint 93.For above-mentioned reasons, the vacuum expendable pattern in the valve active chamber 25 of vacuum valve 15, the piston 30 in the vacuum valve 15 moves down under the pressure of stage clip 26, and like this, valve body 24 is closed joint 28.

The vacuum state of the pipe joint 93 that is communicated with valve active chamber 25 disappears owing to atmosphere enters down booster cavity 85 from atmosphere connecting tube joint 58 through passage 92.Atmosphere connecting tube joint 58 also is communicated with following relief chamber 82 through upwardly extending passage 53c and through hole 94.The volume of the valve active chamber 25 of vacuum valve 15 is big, and a large amount of like this air enters in the valve active chamber 25 through pipe joint 93.Therefore, the pressure in the following relief chamber 82 might reduce, and following relief chamber 82 is communicated with atmosphere connecting tube joint 58 through passage 53c and through hole 94.Under the situation that pressure in following relief chamber 82 descends, level detection barrier film 60 is inhaled downwards and is produced a small amount of distortion, causes the pressure in the booster cavity 81 also to descend.For above-mentioned reasons, the pressure regulating cavity 102 that is communicated with of via through holes 103 head pressure slowly.Be covered with formation small through hole 59a on the damping barrier film 59 of pressure regulating cavity 102, still, the diameter of this hole 59a is little more a lot of than the diameter of the through hole on the valve seat 101 103.Therefore, under the effect of pressure regulating cavity 102 decompressions, damping barrier film 59 produces resiliently deformable downwards.For above-mentioned reasons, there are not the part of micropore 59a and valve seat 101 upper surfaces to be close on the damping barrier film 59.As a result, the air in the pressure chamber 102 can not flow into upward booster cavity 81 by via through holes 103.Therefore, can prevent that level detection barrier film 60 from producing resiliently deformable downwards.For above-mentioned reasons, can prevent that inserted link 65 from moving down and with detect valve 68 and contact.Therefore, the valve body 24 that can prevent vacuum valve 15 is opened joint 28 again.Second kind of embodiment:

In first kind of embodiment's vacuum valve control device, needle-valve is regulated air quantity by the gap of regulating between outer cylinder body and the pin.Can provide the gap of best open-interval needle-valve of vacuum valve quite little.Therefore, if repeat intrusions such as work, the dust of outside, moisture for a long time, the gap is diminished gradually.Therefore, change the gap, vacuum valve is opened so that increase the opening time.

According to second kind of embodiment, as the opening time modulating valve, to substitute gap adjustment needle-valve commonly used, like this, enabling to provide greatly, the cross section of the air hole of air passageways changes with pressure with the cylindrical shape elastic component.Other component are similar to first kind of embodiment.Therefore, to repeat work for a long time the same with vacuum valve, and dust, moisture etc. enters this valve, and like this, the original opening time of setting of vacuum valve can keep stable for a long time.

Be provided with an air release valve 74 on the epicoele 83 of the 3rd housing 53, it is a kind of opening time modulating valve.Air release valve 74 designs like this, makes air progress into (Fig. 9) by air hole 74A.Air release valve 74 is made by thick, cylindrical shape elastic component such as rubber or thermoplastic elastic component.The inner-diameter portion whose of air release valve 74 constitutes air hole 74A.The open part 74B of air hole 74A is located at an end of wall thickness part.The cross section of air hole 74A can be changed by the size that opening time adjusting bolt 102 axially applies the pressure of cheating air hole 74A by adjusting.Air release valve 74 is used as follows.When the degree of vacuum of vacuum discharge tube 14 is high, just will regulate bolt 102 opening time unscrews, to increase the section area of air release valve 74 air hole 74A, like this, can shorten the opening time of vacuum valve, when the degree of vacuum of vacuum discharge tube 14 is hanged down, just tighten the opening time and regulate bolt 102, to reduce the section area of air release valve 74 air hole 74A, like this, can prolong the opening time of vacuum valve.The third embodiment

The third embodiment of various details.

According to second kind of embodiment, it provides a kind of opening time modulating valve of automatic control.Other component are identical with first kind of embodiment.(example 1)

Shown in Fig. 6 A and 6B, barrier film 102 is fixed on the pin profit 74, it the pressure of spring 103 and with vacuum discharge tube 14 that passage 95 is communicated with in degree of vacuum between keep balance.Needle-valve 74 can be moved to suitable position like this.When the degree of vacuum in the vacuum discharge tube 14 is high, can increase the Valve travel of needle-valve 74.When its degree of vacuum is low, can shorten the Valve travel of needle-valve 74.

According to example 1, can provide following working method.When controlling the Valve travel of needle-valve 74 automatically according to the degree of vacuum that transmits from vacuum discharge tube 14, Valve travel is as the opening time modulating valve, (a) degree of vacuum is higher, the Valve travel of needle-valve 74 is just bigger, the 15 pent times of vacuum valve are short like this, (b) degree of vacuum is littler, and the Valve travel of needle-valve 74 is just short, like this vacuum valve time of opening length just.According to above-mentioned situation, the air/liquid ratio in the pipeline can maintain in the prespecified range, the work that vacuum type liquid collection/conveying equipment can be stable.(example 2)

Example 2 is that with the difference of example 1 needle-valve 110 and duckbill Valve 120 are used as the opening time modulating valve in the control joint 27, shown in Fig. 7 A-7C.Identical in all the other component and the example 1.

Needle-valve 110 and duckbill Valve 120 are located in the passage 193, and passage 193 is with the inside and outside connection of the epicoele 83 (pressure control cavity) of the 3rd housing 53.In the present embodiment, duckbill Valve 120 is located in the passage 193, and it is darker than needle-valve 110.But duckbill Valve 120 is near than needle-valve 110 from epicoele 83.

Metering pin valve 110 is so that spiral moves before and after the valve seat in passage 193.Use needle-valve 110 so that suitably regulate the gap of relative valve seat.

The aperture of regulating this valve with the vacuum powers in the epicoele 83 of mouth 121 outer surfaces that are applied to duckbill Valve.When vacuum power is high, owing to be applied to the atmospheric pressure on mouth 121 internal surfaces with to be applied between the high negative pressure on mouth 121 outer surfaces pressure reduction big, therefore, the increase of the valve opening of duckbill Valve 120.When vacuum power was low, owing to be applied to the atmospheric pressure on mouth 121 internal surfaces and be applied between the lower negative pressure on mouth 121 outer surfaces pressure reduction little, therefore, the valve opening of duckbill Valve 120 reduced.

For example 2, when regulating the valve opening of duckbill Valve 120 automatically according to the vacuum power in the chamber 83, valve opening is as the opening time modulating valve, that is to say the degree of vacuum that transmits from vacuum discharge tube 14, (a) degree of vacuum is bigger, and the valve opening of duckbill Valve 120 increases, vacuum valve 15 cuts out at short notice like this, (b) degree of vacuum is lower, and the valve opening of duckbill Valve 120 is littler, and time of being unlocked of vacuum valve 15 is long like this.Because the air/liquid ratio in the above-mentioned situation, pipeline remains on a predetermined scope, and this vacuum type liquid collecting device working stability.(example 3)

Example 3 is that with the difference of example 1 needle-valve 110 and flexible throttle valve 130 are as the opening time modulating valve in the control joint 27, shown in Fig. 8 A-8C.Identical in all the other component and the example 1.

Needle-valve 110 and throttle valve 130 are located in the passage 193, and this passage 193 is with the inside and outside connection of the epicoele 83 (pressure control cavity) of the 3rd housing 53.In this embodiment, throttle valve 130 is located at the place, aperture of the passage 193 in chamber 83.But it is 83 darker than needle-valve 110 from the chamber to be located at throttle valve 130 in the passage 193.

The same with example 2, metering pin valve 110 is so that spiral moves before and after the valve seat in passage 193.With the suitable gap of regulating with respect to valve seat of needle-valve.

Throttle valve 130 is made by gentle elastic component such as rubber and synthetic rubber spare, and design like this, make it come control valve opening according to the vacuum power in the chamber 83 on the outer surface that acts on circular cone, when vacuum power is big, because the pressure reduction that acts on the atmospheric pressure on the circular cone internal surface and act between the high negative pressure on the external conical surface is big, so the valve opening elasticity of throttle valve 130 increases; When vacuum power is low because act on the atmospheric pressure on the circular cone internal surface and the pressure reduction that acts between the lower negative pressure on the external conical surface little, so the valve opening elasticity of throttle valve 130 reduces.

According to example 3, when controlling automatically according to the vacuum power in the chamber 83 as the valve opening of the throttle valve 130 of opening time modulating valve, in other words, from the vacuum of vacuum discharge tube 14, (a) degree of vacuum is bigger, and the valve opening of throttle valve 130 increases, vacuum valve 15 time of closing is short like this, (b) degree of vacuum is littler, and the valve opening of throttle valve 130 reduces, and time of being opened of vacuum valve 15 is long like this.According to above-mentioned situation, the air/liquid ratio in the pipeline can remain on prespecified range, and vacuum type liquid collecting device can stable operation.The 4th kind of embodiment

In vacuum valve control device of the present invention, elastic rolling barrier film 31 is arranged between first cylinder 21 and second cylinder 22.Valve active chamber in the cylinder is by rolling diaphragm 31 sealings.This rolling diaphragm 31 is made by elastic caoutchouc, and bends between the inner peripheral surface of the outer circumferential face of piston and cylinder, so that rolling diaphragm can be close on the inner peripheral surface of the outer circumferential face of piston and cylinder.Under the situation of the vacuum action lower slider in the valve active chamber of piston in cylinder, rolling diaphragm deforms, so that its bending part moves along the glide direction of piston.As mentioned above, when the volume of valve active chamber was unaltered, when vacuum worked, piston must slide under the effect of rolling diaphragm.

Usually, part near the rolling diaphragm curved section is not close to the interior perimeter surface of cylinder, but this part contacts with rolling diaphragm on being close to the piston outer circumferential face, under the above-mentioned pressure effect when the part of rolling diaphragm contacts with another part, under the situation that contact segment is moved, contact segment might wear and tear and damage.When rolling diaphragm was ground away, the sealing of rolling diaphragm might be destroyed.When the sealing of rolling diaphragm is destroyed, the sealing of valve active chamber can not be kept, even can not driven plunger when the valve active chamber is in vacuum state.

Therefore,, used a kind of method in practice, adopted this method, coated lubricant oil on the surface of rolling diaphragm, as estersil or silicone oil in order to eliminate the wearing and tearing of rolling diaphragm.But the lubricant oil that is coated with penetrates in the rolling diaphragm of being made by elastic material, so that the effect of lubricant oil can not be brought into play for a long time.Therefore, rolling diaphragm must be changed in a short time.

The piston that is located in the cylinder is connected with valve rod.This valve rod inserts in the interior through hole of cylinder.Valve body is fixed on an end that is positioned at the outer valve rod of cylinder.Shaft sealing contacts with valve stem seal, so that under this sealing state, valve rod can slide with respect to through hole.Described shaft sealing also is to be made by the elastic material as rubber.Therefore, when shaft sealing during along valve stem slides, it is worn, and along with its sealing of loss of time is also destroyed.

Therefore, adopt the method as rolling diaphragm on the axle surface, to coat lubricant oil.But the lubricant oil that is coated with penetrates in the shaft sealing of being made by elastic material.So shaft sealing might can not be worked at short notice.Because shaft sealing contacts with the sewage that flows in joint, so the lubricant oil in the shaft sealing is rinsed out by sewage.Therefore, lubricant oil acts on the rolling diaphragm short at the effect ratio of shaft sealing.

According to four embodiment of the invention, rolling diaphragm 31 is with 25 sealings of the valve active chamber in first cylinder 21 and second cylinder 22.When the valve active chamber 25 above the rolling diaphragm was in vacuum state, piston 30 moved up under the effect of vacuum.At this moment, because the motion of piston 30, the rolling diaphragm 31 that is attached on the piston outer periphery breaks away from from piston 30 outer circumferential faces continuously.Simultaneously, rolling diaphragm 31 contacts with second cylinder, 22 internal surfaces continuously.

Rolling diaphragm 31 is made by rubber, adopts formation technique to be mixed with lubricant oil in described rubber, as silicone oil, silicone grease and DOP (dioctyl phthalate).Therefore, the lubricant oil that is blended in the rubber oozes out from its surface at leisure.So the total surface of rolling diaphragm 31 is to have lubricant oil to ooze out.

In addition, be provided with shaft sealing 32 around the through hole of dividing plate 21a, it contacts with the sealing of valve rod 29 outer circumferential faces, and described valve rod 29 passes the through hole of dividing plate 21a.The same with the method for foregoing shaft sealing 32, shaft sealing 32 is made by rubber, is mixed with lubricant oil with formation technique in this rubber, as silicone oil, silicone grease and DOP (dioctyl phthalate).Therefore, the lubricant oil that is mixed in the rubber oozes out from its surface at leisure.So lubricant oil always oozes out from the surface of shaft sealing 32.All the other component are identical with first kind of embodiment.

For above-mentioned reasons, the valve active chamber 25 above the rolling diaphragm 31 of vacuum valve 15 is in vacuum state.When air entered into rolling diaphragm 31 bottoms, piston 30 is sliding compression spring 26 upwards.Shown in Fig. 2 B, along with piston 30 upwards slides, the bending part of rolling diaphragm 31 moves upward continuously, and rolling diaphragm 31 breaks away from from top with the partial continuous ground that piston 30 outer circumferential faces are close to, and simultaneously, rolling diaphragm 31 is adjacent to second cylinder, 22 inner peripheral surfaces up.As mentioned above, the valve active chamber 25 above the rolling diaphragm 31 is kept its sealing state, and is in vacuum state rapidly when its constancy of volume.

At this moment, along with the motion of piston 30, the kink branch of rolling diaphragm 31 changes.Because lubricant oil constantly oozes out from the surface of rolling diaphragm 31, though closely contact each other between the relative bending part, the wearing and tearing of bending part can be eliminated.Simultaneously, because the effect of lubricant oil, can prevent that rolling diaphragm 31 respectively and the wearing and tearing between piston 30 outer circumferential faces and second cylinder, 22 inner peripheral surfaces.Therefore, rolling diaphragm 31 can be stablized use chronically.

When piston 30 moves up, the sealing situation lower slider that the valve rod 29 that is connected with piston 30 closely contacts in valve rod 29 and shaft sealing 32.Therefore, the valve body 24 that is connected with valve rod 29 lower ends moves up.As a result, joint 28 enters opening state.Because vacuum discharge tube 14 is in vacuum state, so pumping tube 13 is by joint 28 step-downs, so that sewage is sucked in the pumping tube 13.The sewage that is inhaled into is delivered to vacuum discharge tube 14 from joint 28, and is stored in the collecting pit.

Lubricant oil always oozes out from shaft sealing 32 surfaces, and this shaft sealing 32 closely contacts with valve rod 29.Therefore, when valve rod 29 slided in shaft sealing 32, the wearing and tearing of shaft sealing 32 can be avoided.

When sewage was inhaled in the cesspool 11 as mentioned above, the pressure in the level detection pipe 37 reduced.Therefore, the pressure of vacuum valve control device 27 descends, and air enters vacuum valve control device 27 through atmospheric communicating pipe 43 and pipe 44.Air enters into after the vacuum valve control device 27, enters valve active chamber 25 through intercommunicating pore 93, causes the vacuum state in the valve active chamber 25 to disappear.Therefore, under the effect of stage clip 26, the piston 30 of vacuum valve 15 is descending, and valve rod 29 closely contacts in the air tight condition lower slider with shaft sealing 32.Like this, valve body 24 is closed joint 28.

At this moment, the part that rolling diaphragm 31 and second cylinder, 22 inner peripheral surfaces are close to is portion's disengaging from it little by little, cause bending part to move down, and rolling diaphragm 31 little by little contacts from the bottom up with piston 30 outer circumferential faces.

In this case, because lubricant oil oozes out from the surface of shaft sealing 32 and rolling diaphragm 31, upward wear and tear so can prevent its surface.The 5th kind of embodiment

In addition, shown in Fig. 2 A and 2B, 10A and 10B, vacuum valve 15 comprises a rolling diaphragm 31, and it is made with the elastic material the same with natural rubber and synthetic rubber, and is arranged between valve active chamber 25 and the piston 30.Shown in Figure 10 A, rolling diaphragm 31 forms one and has the cylindrical shape of bottom, and its a worn-out mouthful edge 31A is inserted between two cylinders, 21,22 attachment portions, and its bottom 31b is fixed on the piston 30.One end of rolling diaphragm 31 can be close to the internal surface of second cylinder that constitutes valve active chamber 25, and its other end and piston 30 outer surfaces are close to.

Because said structure, when under the situation of piston 30 in the spring force of spring 26 and the vacuum balance in the supply valve active chamber 25 during vertical motion, valve body 24 is opened and closed, and an end of rolling diaphragm 31 is close to cylinder 22 internal surfaces of formation valve active chamber 25.Under the situation that rolling diaphragm 31 intermediate portions are folded, its other end and piston 30 outer surfaces are close to.In these cases, rolling diaphragm 31 is with piston 30 vertical motions.The middle fold section that the motion of rolling diaphragm 31 simultaneously resembles between the two ends is rolling.

But, in this embodiment, under the free state of rolling diaphragm 31 before installation, wherein can be made into major diameter part 32A with the end that cylinder 22 internal surfaces that constitute valve active chamber 25 are close to, can be made into small diameter portion 32B with the other end that the outer surface of piston 30 is close to, the intermediate portion between 32A and the 32B is made tapering part 32C.Therefore, describe in detail, prevented the contact between the crooked inner surface of middle fold section, can prevent like this by the caused damage of two surface frictions as the back.

According to the foregoing description, in the free state before rolling diaphragm 31 is installed, wherein an end is made major diameter part 32A, small diameter portion 32B is made in the other end, intermediate portion is made tapering part 32C.Therefore, when using vacuum valve, contact with each other caused damage when preventing described surface friction between the crooked inner surface of fold section in the middle of preventing with activation.

In addition, even when valve 15 repeated out and closes, rolling diaphragm 31 can not ground away yet, and the opening and closing of valve 15 and stability are kept for a long time like this.And, can prolong the replacing time limit of rolling diaphragm 31, and reduce required maintenance man.

In above-mentioned vacuum valve 15, after rolling diaphragm 31 is fixed on the piston 30, install under the situation of cylinder 22, because therefore the force of sliding friction height of the elastic component of the rubber-like of formation rolling diaphragm 31, must coat lubricant oil on rolling diaphragm 31, be easy to assembling.Can adopt formation technique with lubricant oil, be pre-mixed in rolling diaphragm as silicone oil, rather than lubricant oil is coated on the rolling diaphragm.And the elastic component that can ooze out the rubber-like of lubricant oil internally can be used to make rolling diaphragm 31.

Described as the foregoing description, in vacuum valve control device of the present invention, it is fast that the resiliently deformable of level detection barrier film is recovered.Therefore, vacuum valve might promptly be returned to closed condition from open mode, and can guarantee the whole system stable working.

Therefore, according to the present invention, according to the vacuum pressure in the vacuum tube, vacuum valve can be opened in the suitable opening time, and the ratio of the air/liquid in the pipeline can maintain prespecified range.So vacuum type liquid collection/conveying equipment can stably be worked.

In addition, according to the present invention, adopt this vacuum valve, the stability that closes and close of beating of valve is maintained for a long time, and required maintenance work reduces greatly.

Claims

1. vacuum valve control device that is used to control the vacuum valve opening and closing, described vacuum valve comes the opening and closing tube-shaped joint by vacuum, described tube-shaped joint is used for connecting vacuum discharge tube that is in vacuum state and the pumping tube that aspirates pond liquid, and described vacuum valve control device comprises:

-level detection pipe, its internal pressure fluctuates with liquid surface lifting in the pond;

-pressure regulating cavity, it is communicated with described level detection pipe;

Resiliently deformable takes place in-level detection barrier film when its pressure in pressure regulating cavity acts on the described barrier film by intercommunicating pore;

-changing valve, it changes direction by vacuum action, so that selectively vacuum or air are sent in the described vacuum valve;

-detect valve, it is used to control the supply of the vacuum of sending into described changing valve and stops; With

-piston, it is used to make described detection valve commutation, and described detection valve drives by the resiliently deformable of described level detection barrier film, it is characterized in that

-damping barrier film is located between described level detection pipe joint and the described pressure regulating cavity, described damping barrier film has a small through hole at least, so that when the pressure in described level detection pipe joint raises gradually, described damping barrier film can not deform, owing to making the damping barrier film, the pressure regulating cavity pressure release produces distortion, cause the intercommunicating pore that forms between pressure regulating cavity and the level detection barrier film to be closed, when the pressure in the pressure regulating cavity rose rapidly, described damping barrier film can be discharged into the edge of pressure from it the level detection pipe.

2. vacuum valve control device according to claim 1 is characterized in that,

The diameter of described through hole is to determine that like this area of described through hole is less than 1/8 of described intercommunicating pore cross section.

3. vacuum valve control device that is used to control the vacuum valve opening and closing, joint between pumping tube that described vacuum valve opening and closing are communicated with the pond and the vacuum discharge tube that is communicated with vacuum source, described vacuum valve comprises: a valve body that is used for the described joint of opening and closing, a valve active chamber that is used to hold the piston that is connected with described valve body; One is used for that the power of closing is supplied with the power of the closing supplier be contained in the described valve body in the valve active chamber and one and is used for opening force is supplied with the controller of described valve body in the described valve active chamber by vacuum is applied to, and described vacuum valve control device comprises:

A changing valve, it can be changed between vacuum passage in the valve active chamber and air passageways,

One with the pond in the level detection barrier film of liquid level interlock;

A pressure chamber system chamber that is used for vacuum power is supplied with described changing valve is so that vacuum passage is communicated with the valve active chamber;

A detection valve that is located in the described pressure control cavity, described detection valve can be introduced vacuum power described pressure control cavity;

A piston that directly drives by described level detection barrier film, described piston is inserted into described pressure control cavity, so that drive described detection valve; With

An opening time modulating valve that is used to discharge the vacuum power that is imported into described pressure control cavity; It is characterized in that

Described opening time modulating valve has an air hole that is used to discharge vacuum, its can compressive deformation changing the cross section of described air hole, thereby can control the opening time of described vacuum valve.

4. vacuum valve control device according to claim 3 is characterized in that,

Described opening time modulating valve is made by the cylindrical shape elastic component.

5. vacuum valve control device that is used to control the opening and closing of vacuum valve, joint between pumping tube that described vacuum valve opening and closing are communicated with the pond and the vacuum discharge tube that is communicated with vacuum source, described vacuum valve comprises: a valve body that is used for the described joint of opening and closing; A valve active chamber that is used to hold a piston that is connected with described valve body; One is used for supplying with the power of the closing supplier that is contained in the described valve body in the valve active chamber with closing power; With one by vacuum being applied to the controller of in the described valve active chamber opening force being supplied with described valve body, described vacuum valve control device comprises:

A changing valve is changed between vacuum passage that it can be in active chamber and the air passageways;

A pressure control cavity that is used for vacuum power is supplied with described changing valve is so that vacuum passage is communicated with the valve active chamber;

An opening time modulating valve that is used to discharge the vacuum power that is imported into described pressure control cavity; It is characterized in that,

The opening time of described opening time modulating valve is controlled automatically according to the degree of vacuum in the described vacuum discharge tube.

6. vacuum valve control device according to claim 5 is characterized in that,

Described opening time modulating valve comprise one have be arranged on pressure control cavity inside and outside the needle-valve of barrier film in the passage that is communicated with, the Valve travel of described needle-valve is by will be from the vacuum discharge tube

The described barrier film of pressure feed is regulated, and when the pneumatics power of taking seriously was high, the Valve travel of described needle-valve increased,

When the pneumatics power of taking seriously was low, the Valve travel of described needle-valve reduced.

7. vacuum valve control device according to claim 5 is characterized in that,

Described opening time modulating valve comprise one be arranged on described pressure control cavity inside and outside be communicated with

Passage in duckbill Valve, the valve opening of described duckbill Valve by with vacuum pressure from described pressure

Control chamber is fed to the mouth outer surface of described duckbill Valve and regulates, when the pneumatics power of taking seriously is high, and described duck

The valve opening of mouth valve increases, and the pneumatics power of taking seriously is low, and the valve opening of described duckbill Valve reduces.

8. vacuum control valve according to claim 5 is characterized in that

Passage in throttle valve, described throttle valve be by with vacuum pressure from pressure control cavity one side

The outer surface that is fed to described throttle valve is regulated, when the pneumatics power of taking seriously is high, and the valve of described throttle valve

Aperture increases, and when the pneumatics power of taking seriously was low, the valve opening of described throttle valve reduced.

9. a vacuum valve comprises:

One is used for the pumping tube that opening and closing are communicated with the pond and the valve body of joint between the vacuum discharge tube that is communicated with vacuum source;

A valve active chamber that is used to hold a piston that is connected with described valve body;

One is used for supplying with the power of the closing supplier that is contained in the described valve body in the valve active chamber with closing power;

One by being applied to vacuum the controller of in the described valve active chamber opening force being supplied with described valve body,

Cylinder with valve control chamber, vacuum works in described valve active chamber;

The piston that can in described cylinder, slide; With

A rolling diaphragm that is arranged between described piston outer circumferential face and the described cylinder inner peripheral surface, thus the valve active chamber in the described cylinder is sealed, described rolling diaphragm is flexible, it can produce distortion according to the motion of described piston like this, it is characterized in that,

Described rolling diaphragm has closed lubricant oil, thereby lubricant oil can ooze out from described rolling diaphragm surface.

10. vacuum valve according to claim 9 is characterized in that,

Described rolling diaphragm is made by rubber, and adopts formation technique with lubricant oil, be blended in the rubber as silicone oil, silicone grease or DOP (dioctyl phthalate), thereby the lubricant oil that is blended in the rubber is constantly to ooze out from its total surface.

11. a vacuum valve comprises:

Cylinder with valve active chamber, vacuum works in described valve active chamber;

The piston that can in described cylinder, slide;

A valve rod, its end is connected with described piston, and the other end places outside the cylinder, with toilet

State valve rod and insert described cylinder, place an end of the outer described valve rod of cylinder to be connected with a valve body; With

The one flexible shaft sealing that closely contacts with described valve rod is so that with described cylinder and described valve

Clearance seal between the bar is lived, it is characterized in that,

Described shaft sealing contains lubricant oil, and described lubricant oil can ooze out from the shaft sealing surface.

12. vacuum valve according to claim 11 is characterized in that

Described shaft sealing is made by rubber, adopts formation technique with lubricant oil, as silicone oil, silicone grease

Or DOP (dioctyl phthalate) is blended in the rubber, and like this, the lubricant oil that is blended in the rubber is total

Be little by little to ooze out from its surface.

13. one kind be used for pumping tube that opening and closing are communicated with the pond and with vacuum discharge tube that its vacuum source is communicated with between the vacuum valve of joint, described vacuum valve comprises:

One valve body is with the described joint of its opening and closing;

One piston that is connected with valve body;

One is used to hold the valve active chamber of described piston;

One rolling diaphragm, it is arranged between described valve active chamber and the described piston,

Wherein, an end of rolling diaphragm and described valve active chamber internal surface are close to, and its other end and described outer surface of piston are close to; One closes the power supplier, and it supplies with described valve body with the power of closing, and this is closed the power supplier and is arranged in the described valve active chamber; With a controller, it with vacuum action in described valve active chamber so that opening force is supplied with described valve body,

It is characterized in that,

One end of described rolling diaphragm has a major diameter part, it can be close to the described valve active chamber internal surface that is under the free state before the assembling, its the other end has a small diameter portion, and it can be close to described outer surface of piston, and the tapering part that forms between major diameter part and small diameter portion.